Skip to Content

About: Jack

Recent Posts by Jack

By

in

Blog

Posted

June 14, 2022 at 08:43

4340 steel gears-It is used in making aircraft parts such as landing gear

4340 steel gears–It is used in making aircraft parts such as landing gear | OTAI

What is 4340 steel

4340 alloy steel is a high-quality Quenched and Tempered Alloy Structural steel, It belongs to the high-quality medium carbon, Oil Quenched & Tempered Hardness is 28-34 HRc.4340 Annealing delivery hardness less than 250HB.

4340 steel properties are very similar to GB 40CrNiMo steel, JIS SNCM439, and DIN 1.6511 36CrNiMo4 Alloy structural steel. In most work environments, 4340 is equivalent to 40CrNiMo, 1.6511 36CrNiMo4, and SNCM439 steel.

Why Choose OTAI

1)All year round, Otai can guarantee 4340 bars’ stock in different thicknesses and lengths, which can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4340 steel, working with Bohler, Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Stacy from Indonesia send us an inquiry about the 4340 steel alloy, which required a lot of specifications and a small quantity. Stacy asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then Stacy placed the order successfully. After receiving the goods, she said that he would seek our cooperation for a long time. (4340 steel gears)

Steel News

At present, nine counties and cities in Tangshan have lifted the management of regional blockade control.
The clustered epidemics in many places in China have dragged down the production and operation of the manufacturing and construction industries. In the short term, the demand for steel has been unstable, and the rise in steel prices is insufficient.
Once the social “dynamic clearing” is realized in various places, the demand for steel will be released retaliatory, the demand growth may be higher than the supply, the inventory will enter a stage of decline, and there may still be room for steel prices to rise.

0 0 Continue Reading →

By

in

Blog

Posted

June 10, 2022 at 17:43

4340 steel annealed-It’s readily welded in annealed condition

4340 steel annealed–It’s readily welded in annealed condition | OTAI

What is 4340 steel

4340 alloy steel is a high-quality Quenched and Tempered Alloy Structural steel, It belongs to the high-quality medium carbon, Oil Quenched & Tempered Hardness is 28-34 HRc.4340 Annealing delivery hardness less than 250HB.

4340 steel properties are very similar to GB 40CrNiMo steel, JIS SNCM439, and DIN 1.6511 36CrNiMo4 Alloy structural steel. In most work environments, 4340 is equivalent to 40CrNiMo, 1.6511 36CrNiMo4, and SNCM439 steel.

Why Choose OTAI

1)All year round, Otai can guarantee 4340 bars’ stock in different thicknesses and lengths, which can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4340 steel, working with Bohler, Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Stacy from Indonesia send us an inquiry about the 4340 steel alloy, which required a lot of specifications and a small quantity. Stacy asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then Stacy placed the order successfully. After receiving the goods, she said that he would seek our cooperation for a long time. (4340 steel annealed)

Steel News

At present, nine counties and cities in Tangshan have lifted the management of regional blockade control.
The clustered epidemics in many places in China have dragged down the production and operation of the manufacturing and construction industries. In the short term, the demand for steel has been unstable, and the rise in steel prices is insufficient.
Once the social “dynamic clearing” is realized in various places, the demand for steel will be released retaliatory, the demand growth may be higher than the supply, the inventory will enter a stage of decline, and there may still be room for steel prices to rise.

0 0 Continue Reading →

By

in

Blog

Posted

June 10, 2022 at 08:48

4340 steel forging-It is forged at 427 to 1233°C

4340 steel forging–It is forged at 427 to 1233°C | OTAI

What is 4340 steel

4340 alloy steel is a high-quality Quenched and Tempered Alloy Structural steel, It belongs to the high-quality medium carbon, Oil Quenched & Tempered Hardness is 28-34 HRc.4340 Annealing delivery hardness less than 250HB.

4340 steel properties are very similar to GB 40CrNiMo steel, JIS SNCM439, and DIN 1.6511 36CrNiMo4 Alloy structural steel. In most work environments, 4340 is equivalent to 40CrNiMo, 1.6511 36CrNiMo4, and SNCM439 steel.

Why Choose OTAI

1)All year round, Otai can guarantee 4340 bars’ stock in different thicknesses and lengths, which can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4340 steel, working with Bohler, Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Stacy from Indonesia send us an inquiry about the 4340 steel alloy, which required a lot of specifications and a small quantity. Stacy asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then Stacy placed the order successfully. After receiving the goods, she said that he would seek our cooperation for a long time. (4340 steel forging)

Steel News

At present, nine counties and cities in Tangshan have lifted the management of regional blockade control.
The clustered epidemics in many places in China have dragged down the production and operation of the manufacturing and construction industries. In the short term, the demand for steel has been unstable, and the rise in steel prices is insufficient.
Once the social “dynamic clearing” is realized in various places, the demand for steel will be released retaliatory, the demand growth may be higher than the supply, the inventory will enter a stage of decline, and there may still be room for steel prices to rise.

0 0 Continue Reading →

By

in

Blog

Posted

June 9, 2022 at 08:46

a 4340 steel alloy-It’s used for structural applications

a 4340 steel alloy-It’s used for structural applications | OTAI

What is 4340 steel

4340 alloy steel is a high-quality Quenched and Tempered Alloy Structural steel, It belongs to the high-quality medium carbon, Oil Quenched & Tempered Hardness is 28-34 HRc.4340 Annealing delivery hardness less than 250HB.

4340 steel properties are very similar to GB 40CrNiMo steel, JIS SNCM439, and DIN 1.6511 36CrNiMo4 Alloy structural steel. In most work environments, 4340 is equivalent to 40CrNiMo, 1.6511 36CrNiMo4, and SNCM439 steel.

Why Choose OTAI

1)All year round, Otai can guarantee 4340 bars’ stock in different thicknesses and lengths, which can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4340 steel, working with Bohler, Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Stacy from Indonesia send us an inquiry about the 4340 steel alloy, which required a lot of specifications and a small quantity. Stacy asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then Stacy placed the order successfully. After receiving the goods, she said that he would seek our cooperation for a long time. (a 4340 steel alloy)

Steel News

At present, nine counties and cities in Tangshan have lifted the management of regional blockade control.
The clustered epidemics in many places in China have dragged down the production and operation of the manufacturing and construction industries. In the short term, the demand for steel has been unstable, and the rise in steel prices is insufficient.
Once the social “dynamic clearing” is realized in various places, the demand for steel will be released retaliatory, the demand growth may be higher than the supply, the inventory will enter a stage of decline, and there may still be room for steel prices to rise.

0 0 Continue Reading →

By

in

Blog

Posted

June 8, 2022 at 08:48

4340 steel composition-It is ductile down to -150F

4340 steel composition-It is ductile down to -150F | OTAI

What is 4340 steel

4340 alloy steel is a high-quality Quenched and Tempered Alloy Structural steel, It belongs to the high-quality medium carbon, Oil Quenched & Tempered Hardness is 28-34 HRc.4340 Annealing delivery hardness less than 250HB.

4340 steel properties are very similar to GB 40CrNiMo steel, JIS SNCM439, and DIN 1.6511 36CrNiMo4 Alloy structural steel. In most work environments, 4340 is equivalent to 40CrNiMo, 1.6511 36CrNiMo4, and SNCM439 steel.

Why Choose OTAI

1)All year round, Otai can guarantee 4340 bars’ stock in different thicknesses and lengths, which can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4340 steel, working with Bohler, Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Stacy from Indonesia send us an inquiry about the 4340 steel alloy, which required a lot of specifications and a small quantity. Stacy asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then Stacy placed the order successfully. After receiving the goods, she said that he would seek our cooperation for a long time. (4340 steel composition)

Steel News

At present, nine counties and cities in Tangshan have lifted the management of regional blockade control.
The clustered epidemics in many places in China have dragged down the production and operation of the manufacturing and construction industries. In the short term, the demand for steel has been unstable, and the rise in steel prices is insufficient.
Once the social “dynamic clearing” is realized in various places, the demand for steel will be released retaliatory, the demand growth may be higher than the supply, the inventory will enter a stage of decline, and there may still be room for steel prices to rise.

0 0 Continue Reading →

By

in

Blog

Posted

June 7, 2022 at 08:49

4340 steel hrc-Martensite in 4340 steel is mostly lath-shaped

4340 steel hrc-Martensite in 4340 steel is mostly lath-shaped | OTAI

What is 4340 steel

4340 alloy steel is a high-quality Quenched and Tempered Alloy Structural steel, It belongs to the high-quality medium carbon, Oil Quenched & Tempered Hardness is 28-34 HRc.4340 Annealing delivery hardness less than 250HB.

4340 steel properties are very similar to GB 40CrNiMo steel, JIS SNCM439, and DIN 1.6511 36CrNiMo4 Alloy structural steel. In most work environments, 4340 is equivalent to 40CrNiMo, 1.6511 36CrNiMo4, and SNCM439 steel.

Why Choose OTAI

1)All year round, Otai can guarantee 4340 bars’ stock in different thicknesses and lengths, which can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4340 steel, working with Bohler, Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Stacy from Indonesia send us an inquiry about the 4340 steel alloy, which required a lot of specifications and a small quantity. Stacy asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then Stacy placed the order successfully. After receiving the goods, she said that he would seek our cooperation for a long time. (4340 steel hrc)

Steel News

At present, nine counties and cities in Tangshan have lifted the management of regional blockade control.
The clustered epidemics in many places in China have dragged down the production and operation of the manufacturing and construction industries. In the short term, the demand for steel has been unstable, and the rise in steel prices is insufficient.
Once the social “dynamic clearing” is realized in various places, the demand for steel will be released retaliatory, the demand growth may be higher than the supply, the inventory will enter a stage of decline, and there may still be room for steel prices to rise.

0 0 Continue Reading →

By

in

Blog

Posted

June 2, 2022 at 08:42

4340 steel quenching-4340 can be surface hardened to 58HRC

4340 steel quenching-4340 can be surface hardened to 58HRC | OTAI

What is 4340 steel

4340 alloy steel is a high-quality Quenched and Tempered Alloy Structural steel, It belongs to the high-quality medium carbon, Oil Quenched & Tempered Hardness is 28-34 HRc.4340 Annealing delivery hardness less than 250HB.

4340 steel properties are very similar to GB 40CrNiMo steel, JIS SNCM439, and DIN 1.6511 36CrNiMo4 Alloy structural steel. In most work environments, 4340 is equivalent to 40CrNiMo, 1.6511 36CrNiMo4, and SNCM439 steel.

Why Choose OTAI

1)All year round, Otai can guarantee 4340 bars’ stock in different thicknesses and lengths, which can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4340 steel, working with Bohler, Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Stacy from Indonesia send us an inquiry about the 4340 steel alloy, which required a lot of specifications and a small quantity. Stacy asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then Stacy placed the order successfully. After receiving the goods, she said that he would seek our cooperation for a long time. (4340 steel quenching)

Steel News

At present, nine counties and cities in Tangshan have lifted the management of regional blockade control.
The clustered epidemics in many places in China have dragged down the production and operation of the manufacturing and construction industries. In the short term, the demand for steel has been unstable, and the rise in steel prices is insufficient.
Once the social “dynamic clearing” is realized in various places, the demand for steel will be released retaliatory, the demand growth may be higher than the supply, the inventory will enter a stage of decline, and there may still be room for steel prices to rise.

0 0 Continue Reading →

By

in

Blog

Posted

June 1, 2022 at 09:00

4340 steel plate suppliers-It is normally used for aerospace

4340 steel plate suppliers–It is normally used for aerospace | OTAI

What is 4340 steel

4340 alloy steel is a high-quality Quenched and Tempered Alloy Structural steel, It belongs to the high-quality medium carbon, Oil Quenched & Tempered Hardness is 28-34 HRc.4340 Annealing delivery hardness less than 250HB.

4340 steel properties are very similar to GB 40CrNiMo steel, JIS SNCM439, and DIN 1.6511 36CrNiMo4 Alloy structural steel. In most work environments, 4340 is equivalent to 40CrNiMo, 1.6511 36CrNiMo4, and SNCM439 steel.

Why Choose OTAI

1)All year round, Otai can guarantee 4340 bars’ stock in different thicknesses and lengths, which can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4340 steel, working with Bohler, Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Stacy from Indonesia send us an inquiry about the 4340 steel alloy, which required a lot of specifications and a small quantity. Stacy asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then Stacy placed the order successfully. After receiving the goods, she said that he would seek our cooperation for a long time. (4340 steel plate suppliers)

Steel News

At present, nine counties and cities in Tangshan have lifted the management of regional blockade control.
The clustered epidemics in many places in China have dragged down the production and operation of the manufacturing and construction industries. In the short term, the demand for steel has been unstable, and the rise in steel prices is insufficient.
Once the social “dynamic clearing” is realized in various places, the demand for steel will be released retaliatory, the demand growth may be higher than the supply, the inventory will enter a stage of decline, and there may still be room for steel prices to rise.

0 0 Continue Reading →

By

in

Blog

Posted

May 31, 2022 at 08:45

4340 steel normalized-Steel 4340 is usually normalized at 1500 °F

4340 steel normalized-Steel 4340 is usually normalized at 1500 °F | OTAI

What is 4340 steel

4340 alloy steel is a high-quality Quenched and Tempered Alloy Structural steel, It belongs to the high-quality medium carbon, Oil Quenched & Tempered Hardness is 28-34 HRc.4340 Annealing delivery hardness less than 250HB.

4340 steel properties are very similar to GB 40CrNiMo steel, JIS SNCM439, and DIN 1.6511 36CrNiMo4 Alloy structural steel. In most work environments, 4340 is equivalent to 40CrNiMo, 1.6511 36CrNiMo4, and SNCM439 steel.

Why Choose OTAI

1)All year round, Otai can guarantee 4340 bars’ stock in different thicknesses and lengths, which can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4340 steel, working with Bohler, Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Stacy from Indonesia send us an inquiry about the 4340 steel alloy, which required a lot of specifications and a small quantity. Stacy asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then Stacy placed the order successfully. After receiving the goods, she said that he would seek our cooperation for a long time. (4340 steel normalized)

Steel News

At present, nine counties and cities in Tangshan have lifted the management of regional blockade control.
The clustered epidemics in many places in China have dragged down the production and operation of the manufacturing and construction industries. In the short term, the demand for steel has been unstable, and the rise in steel prices is insufficient.
Once the social “dynamic clearing” is realized in various places, the demand for steel will be released retaliatory, the demand growth may be higher than the supply, the inventory will enter a stage of decline, and there may still be room for steel prices to rise.

0 0 Continue Reading →

By

in

Blog

Posted

May 27, 2022 at 08:51

4340 steel for knives-4340 is excellent for hammers and blunt tools

4340 steel for knives-4340 is excellent for hammers and blunt tools | OTAI

What is 4340 steel

4340 alloy steel is a high-quality Quenched and Tempered Alloy Structural steel, It belongs to the high-quality medium carbon, Oil Quenched & Tempered Hardness is 28-34 HRc.4340 Annealing delivery hardness less than 250HB.

4340 steel properties are very similar to GB 40CrNiMo steel, JIS SNCM439, and DIN 1.6511 36CrNiMo4 Alloy structural steel. In most work environments, 4340 is equivalent to 40CrNiMo, 1.6511 36CrNiMo4, and SNCM439 steel.

Why Choose OTAI

1)All year round, Otai can guarantee 4340 bars’ stock in different thicknesses and lengths, which can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4340 steel, working with Bohler, Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Stacy from Indonesia send us an inquiry about the 4340 steel alloy, which required a lot of specifications and a small quantity. Stacy asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then Stacy placed the order successfully. After receiving the goods, she said that he would seek our cooperation for a long time. (4340 steel for knives)

Steel News

Recently, the epidemic situation across the country has shown a trend of high local concentration and multi-point distribution, which has affected the supply side, demand side, logistics, and warehousing of the domestic bulk commodity market to varying degrees.
As of April 8, according to incomplete statistics from Mysteel, a total of 21 provinces have released the latest information on the resumption of work. Among them, 19 counties (cities, districts) and development zones (management zones) in Tangshan have been lifted in an orderly manner. Vehicle transportation in the Handan area is hindered, and it is difficult for foreign resources to enter the Handan market, resulting in poor arrival of goods at the base. Xuzhou has strict traffic control, and the circulation of scrap steel resources is seriously hindered; Gulou District and Quanshan District are the most controlled areas, and scrap steel sites are basically closed.

0 0 Continue Reading →

By

in

Blog

Posted

May 26, 2022 at 08:58

4340 steel information-It is used primarily for structural applications

4340 steel information-It is used primarily for structural applications | OTAI

What is 4340 steel

4340 alloy steel is a high-quality Quenched and Tempered Alloy Structural steel, It belongs to the high-quality medium carbon, Oil Quenched & Tempered Hardness is 28-34 HRc.4340 Annealing delivery hardness less than 250HB.

4340 steel properties are very similar to GB 40CrNiMo steel, JIS SNCM439, and DIN 1.6511 36CrNiMo4 Alloy structural steel. In most work environments, 4340 is equivalent to 40CrNiMo, 1.6511 36CrNiMo4, and SNCM439 steel.

Why Choose OTAI

1)All year round, Otai can guarantee 4340 bars’ stock in different thicknesses and lengths, which can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4340 steel, working with Bohler, Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Stacy from Indonesia send us an inquiry about the 4340 steel alloy, which required a lot of specifications and a small quantity. Stacy asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then Stacy placed the order successfully. After receiving the goods, she said that he would seek our cooperation for a long time. (4340 steel information)

Steel News

At present, nine counties and cities in Tangshan have lifted the management of regional blockade control.
The clustered epidemics in many places in China have dragged down the production and operation of the manufacturing and construction industries. In the short term, the demand for steel has been unstable, and the rise in steel prices is insufficient.
Once the social “dynamic clearing” is realized in various places, the demand for steel will be released retaliatory, the demand growth may be higher than the supply, the inventory will enter a stage of decline, and there may still be room for steel prices to rise.

0 0 Continue Reading →

By

in

Blog

Posted

May 25, 2022 at 08:50

4340 tool steel-It’s low alloy steel with good hardenability

4340 tool steel-It’s low alloy steel with good hardenability | OTAI

What is 4340 steel

4340 alloy steel is a high-quality Quenched and Tempered Alloy Structural steel, It belongs to the high-quality medium carbon, Oil Quenched & Tempered Hardness is 28-34 HRc.4340 Annealing delivery hardness less than 250HB.

4340 steel properties are very similar to GB 40CrNiMo steel, JIS SNCM439, and DIN 1.6511 36CrNiMo4 Alloy structural steel. In most work environments, 4340 is equivalent to 40CrNiMo, 1.6511 36CrNiMo4, and SNCM439 steel.

Why Choose OTAI

1)All year round, Otai can guarantee 4340 bars’ stock in different thicknesses and lengths, which can be customized.

2)After placing an order, shipment can be arranged immediately.

3)Otai is a leading China supplier of 4340 steel, working with Bohler, Uddeholm, Thyssenkrupp, with ISO9001 certified.

Customer’s story

We would like to share a real case of our customer with you. Stacy from Indonesia send us an inquiry about the 4340 steel alloy, which required a lot of specifications and a small quantity. Stacy asked many suppliers who were unwilling to cooperate and finally found us. We are the source manufacturer so that we can meet the needs of customers to customize the specifications of goods. Then Stacy placed the order successfully. After receiving the goods, she said that he would seek our cooperation for a long time. (4340 tool steel)

Steel News

Recently, the epidemic situation across the country has shown a trend of high local concentration and multi-point distribution, which has affected the supply side, demand side, logistics, and warehousing of the domestic bulk commodity market to varying degrees.
As of April 8, according to incomplete statistics from Mysteel, a total of 21 provinces have released the latest information on the resumption of work. Among them, 19 counties (cities, districts) and development zones (management zones) in Tangshan have been lifted in an orderly manner. Vehicle transportation in the Handan area is hindered, and it is difficult for foreign resources to enter the Handan market, resulting in poor arrival of goods at the base. Xuzhou has strict traffic control, and the circulation of scrap steel resources is seriously hindered; Gulou District and Quanshan District are the most controlled areas, and scrap steel sites are basically closed.

0 0 Continue Reading →

 

Recent Comments by Jack

    No comments by Jack